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https://issues.apache.org/jira/browse/MAPREDUCE-6431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15120546#comment-15120546
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Robert Kanter commented on MAPREDUCE-6431:
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Yup.  Looks like MAPREDUCE-6566 was reopened for this 
(https://issues.apache.org/jira/browse/MAPREDUCE-6566?focusedCommentId=15088532&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15088532)

> JobClient should be an AutoClosable
> -----------------------------------
>
>                 Key: MAPREDUCE-6431
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6431
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 2.7.1
>            Reporter: André Kelpe
>            Assignee: Haibo Chen
>         Attachments: mapreduce6431.001.patch, mapreduce6431.002.patch
>
>
> Since the new target version if Java is 7, it would be great if JobClient 
> could implement the java.lang.AutoClosable interface, so that it can be used 
> in try-with-ressource statements. See here: 
> https://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html



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